SelecTree - Tree Detail Record

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Photo Credits:
M. Ritter, W. Mark and J. Reimer

Photo Locations:
UC Santa Cruz - Santa Cruz, CA, Temecula, CA, Huntington Botanical Gardens - San Marino, CA, San Luis Obispo, CA and Lotusland - Santa Barbara, CA

COAST LIVE OAK
Quercus agrifolia

General Notes

     Susceptible to oak moth. Sudden Oak Death manifested as a canker. Native to Central and Southern California.
     A Quercus agrifolia in Julian is registered as a California Big Tree. It measures 58 feet high, with a trunk circumference of 338 inches and a crown spread of 75 feet.
  List all Fagaceae | Quercus

• Quercus agrifolia - Fagaceae
• Native To: Central and Southern California
• Habit: Spreading and covers an Extensive Area.
  Has Evergreen foliage.
• Shape: Rounded or Umbrella
• Sunset Zones: 5, 7 - 10, 12 and 14 - 24
• USDA Hardiness Zones: 9 - 10
• Exposure: Full Sun to Partial Shade
• Water Needs: Moist to Dry Soil
• Soil Type: Clay, Loam or Sand
• Soil pH: Highly Acidic to Slightly Alkaline
• Seaside Tolerance: Good in Moderate Zone
• Height: 65 feet
• Growth Rate: 24 Inches per Season
• Longevity: Greater than 150 years
• Leaves: Elliptic and Hollylike Glossy Dark Green. Evergreen.
• Flowers: Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).
• Fruit: Prolific, Brown Acorn, Large (1.50 - 3.00 inches), fruiting in Fall or Winter.
• Bark: Dark Gray, Furrowed or Smooth
• Pest & Disease: Resistant to Verticillium. Susceptible to Goldspotted Oak Borer, Aphids, Beetle Borers, Beetle Grubs, Caterpillars, Coddling Moths, Insect Galls, Scales and White Fly, Sudden Oak Death, Crown Rot, Mistletoe, Oak Root Rot, Phytophthora, Powdery Mildew, Root Rot and Sooty Mold More information …
• Shading Capacity: Rated as Moderately Dense in Leaf
• Branch Strength: Rated as Strong
• Litter Issue: Dry Fruit
• Root Damage Potential: Rated as Moderate / High
• Health Hazard: Allergy and Poisonous
• Biogenic Emissions: High
• Fire Resistance: Favorable

Cite This Page:
SelecTree. "Quercus agrifolia Tree Record." 1995-2012. May 19, 2013.
< http://selectree.calpoly.edu/treedetail.lasso?rid=1227 >